/Engine/Plugins/Runtime/nDisplay/Source/DisplayClusterMoviePipeline/Public/DisplayClusterMoviePipelineSettings.h
return true if is whether it populated 1 or more viewports in the given array.
bool GetViewports ( const [UWorld](API\Runtime\Engine\Engine\UWorld) * InWorld, [TArray](API\Runtime\Core\Containers\TArray)< [FString](API\Runtime\Core\Containers\FString) > & OutViewportss, [TArray](API\Runtime\Core\Containers\TArray)< FIntPoint > & OutViewportResolutions ) const